Toyota Avalon (XX50): Diagnostic Trouble Code Chart. Display does not Dim when Light Control Switch is Turned ON. Does not Play even after Bluetooth Audio Mode is Selected

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Diagnostic Trouble Code Chart. Display does not Dim when Light Control Switch is Turned ON. Does not Play even after Bluetooth Audio Mode is Selected

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Navigation System

DTC No.	Detection Item	Link
B1324	Lost Communication with Meter
B1325	Lost Communication with HUD
B153A	GVIF Disconnected (from Extension Module to H/U)
B1543	Extension Module Disconnected 2
B1551	HD Radio Tuner Malfunction
B1556	Extension Module Malfunction 2
B1579	Voice Recognition Microphone Disconnected
B1585	USB Device Malfunction
B158D	Video Signal Stoppage
B158F	AV Signal Stoppage (Low Battery Voltage)
B15A0	LAN Master Malfunction
B15A3	Stereo Component Amplifier Malfunction
B15AD	Navigation Processor Malfunction
B15B0	Display Screen Malfunction
B15B3	Radio Tuner Malfunction
B15B7	Bluetooth Module Malfunction
B15BA	XM Tuner Malfunction
B15C0	GPS Antenna Connection Malfunction(short)
B15C1	GPS Antenna Connection Malfunction(break)
B15C2	Speed Signal Malfunction
B15C3	Speaker Output Short
B15D3	Stereo Component Amplifier Disconnected
B15DB	Telematics Transceiver Disconnected
B15F5	Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction
B15F6	Main Body ECU Vehicle Information Reading/Writing Process Malfunction
B15F7	Certification ECU Vehicle Information Reading/Writing Process Malfunction
B15F8	D-Seat ECU Vehicle Information Reading/Writing Process Malfunction
B15F9	UART Communication Malfunction(for A/C)
B15FE	XM Tuner Antenna Disconnected
B15FF	XM Tuner Antenna Short
C1610	Camera ECU Malfunction
U0073	Sending Malfunction (Navigation to APGS)
U0100	Engine ECU Communication
U0129	VSC(ECB)ECU Communication
U0140	Lost Communication with Body Control Module
U0155	Meter ECU Communication
U0164	Air Conditioner ECU Communication
U0198	Lost Communication with Telematic Control Module
U023B	Lost Communication with Image Processing Module "B"
U0265	Lost Communication with Image Processing Sensor A
U1110	Clearance Sonar ECU Communication

Display does not Dim when Light Control Switch is Turned ON

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Click here
When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.

PROCEDURE

1.	CHECK IMAGE QUALITY SETTING

(a) Turn the light control switch to the tail or head position.

(b) Check that the daytime screen setting on the display adjustment screen is set to on.

Result	Proceed to
Daytime screen setting is set to on.	A
Daytime screen setting is set to off.	B

CHANGE DAYTIME SCREEN SETTING TO OFF

2.	CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

Click here

(b) Check that the display changes between ON and OFF according to the light control switch operation.

OK:

Light Control Switch	Display
Tail or head	ON
Off or AUTO	OFF

HINT:

The display is updated once per second. It is normal for the display to lag behind the actual switch operation.
Make sure to move the vehicle to a bright area before performing an operation check with the light control switch in the AUTO position.

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Does not Play even after Bluetooth Audio Mode is Selected

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Click here
When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.

HINT:

Even if the portable player can play audio content, it may not be able to play via the in-vehicle device. This does not necessarily indicate a malfunction of the in-vehicle device.

PROCEDURE

1.	CHECK OPERATION

(a) Check if the portable player operates normally.

OK:

The portable player operates normally.

MALFUNCTION IN PORTABLE PLAYER

2.	CHECK AUDIO SETTINGS

(a) Set volume, fader and balance to the initial values and check that the sound is normal.

OK:

Audio system returns to normal.

HINT:

Sound quality adjustment measures vary according to the type of amplifier.

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

3.	CHECK USING ANOTHER "Bluetooth" AUDIO COMPATIBLE VEHICLE OF SAME MODEL

(a) Check if the "Bluetooth" audio player plays normally on another "Bluetooth" audio compatible vehicle of the same model.

OK:

"Bluetooth" audio player plays normally.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

MALFUNCTION IN PORTABLE PLAYER

Cursor or Map Rotates when Vehicle Stopped. Data List / Active Test. Data Signal Circuit between Radio Receiver and Stereo Jack Adapter

Dtc Check / Clear. Freeze Frame Data. How To Proceed With Troubleshooting

See More:

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